Reports earlier this week suggested that the Bundesliga side are interested in signing the Scotsman, rivalling both Arsenal and Leicester.

Both Premier League sides have been linked with the player, as Arsenal look for a long-term replacement to Nacho Monreal, while a number of Celtic stars have been touted as potential targets for Brendan Rodgers’ Leicester since his move to the King Power.

With Ben Chilwell attracting interest from Manchester City, Tierney could be viewed as the perfect replacement.

Celtic will be desperate to keep hold of the player over the summer but may struggle to do so if interest continues to rise.